南方农业学报2017，Vol.48Issue(5)：913-919,7.DOI:10.3969/j.issn.2095-1191.2017.05.026
培养基投放对池塘表层底泥磷形态及底栖 饵料生物培育效果的影响
Influences of media provisioning on phosphorus forms in surface sediments and benthos baits cultivation effects
摘要
Abstract
[Objective]Influences of media provisioning on phosphorus forms in surface sediments and benthos baits cultivation effects were studied to provide reference for application of new media in ecological pond culture. [Method]In the experiment,different amounts of culture media were buried in ponds,which were 4.5×103 (treatment 1)、1.35×104(treat-ment 2)、6.75×104(treatment 3)kg/ha,control group did not deliver culture medium, and each group set two repeats. In spring, summer and autumn, surface sediment was collected twice each quarter for measuring phosphorus of different forms. At the end of each month, benthos baits were collected to measure the biomass.[Result]Density of Tubificidae increased with the increase of culture medium amount in four experimental treatments, the order of biomass of Chironomid larvae was:treatment 2(12.82 g/m2)>treatment 1(10.77 g/m2)>treatment 3(10.02 g/m2)>control(8.91 g/m2). Biomass in treatment 1, 2 and 3 were 43.90%, 20.85%, and 12.50%higher than that in control respectively. The contents of total phosphorus(TP), inorganic phosphorus (IP), calcium-bound phosphorus (Ca-P), aluminum-bound phosphorus (Al-P), and loosely sorbed phosphorus(Labile-P) were all represented as follows: treatment 3>treatment 2>treatment 1>control, which meant these indexes were positively correlated with media amount. The seasonal variation of Labile-P content in four treatments was:autumn>spring>summer, and the seasonal variations of Fe-P, Al-P and Ca-P was spring>summer>autumn. The average contents of Labile-P and Fe-P were 27.00%and 31.00%higher than those in control respectively. [Conclusion]Media pro-visioning in aquaculture ponds can effectively improve the biomass of benthos baits and increase Labile-P and Fe-P con-tents of phosphorus of different forms in surface sediment. Rising Fe-P content is benefical for culture of Chironomid lar-vae, then can provide natural baits for pond culture for shrimp and crab.关键词
池塘/培养基/磷形态/季节变化/底栖饵料生物/培育效果Key words
pond/medium/phosphorus form/seasonal variation/benthos baits/cultivation effect分类
农业科技引用本文复制引用
周文全,周鑫,刘国锋,徐增洪,柏爱旭..培养基投放对池塘表层底泥磷形态及底栖 饵料生物培育效果的影响[J].南方农业学报,2017,48(5):913-919,7.基金项目
江苏省科技支撑计划项目(BE2013378) （BE2013378）
江苏省海洋与渔业局三新工程项目(D2014-18) （D2014-18）
淮安市科技计划项目(Y2014-24) （Y2014-24）
